Safety-pin.



PATENTED JULY 2, 1907.

G. VON HAHN.

SAFETY PIN. APPLICATION FILED FEB. '7 1906.

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INVENTOR. GUSTAV 'uoN HAHN. BYQW UNITED STATES PATENT GUSTAV VON HAHN, OF ST. LOUIS,'MISSOURI.

SAFETY-PIN.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed February 7,1906. Serial No. 299,948.

the obj cct of my invention is to construct a safety pin so that the point of the pin, when properly seated in the shield, will be locked therein so that it cannot readily be withdrawn by any outward strain, even though the leg of the'pin which is pointed be abnormally bent.

In safety pins of the ordinary construction, when the pointed legs are bent or sprung from undue strain, the points of said legs will easily slip from the metal shields at the ends of the pins, and it is my intention to construct a pin which will overcome this defect, and which pin may be readily closed or opened in the ordinary manner by proper pressure of the thumb and finger.

To the above purposes, my invention consists in certain novel features of construction and arrangementof parts, which will be hereinafter more fully set forth,

pointed out in the claims, and illustrated in the accompanying drawings, in which 2-- Figure 1 is a side elevation of a safety pin of my in proved construction, the same being in an open position; Fig. 2 is a horizontal section taken on the line 22 of Fig. 1; Fig. 3 is a vertical section taken on the line 3-3 of Fig. 1, with the pin engaged in the shield; Fig. 4 is an elevation of the blank which is cut from suitable sheet metal, and which forms the shield of my improved pin; .Fig. 5 is a vertical section taken through the center of the shield.

In the construction of the pin as shown, 1 designates the back, or main leg, of the pin, to one end of which the shield is attached, and at the opposite end of this back, or. log, is formed the usual resilient coil 2, and extending therefrom is the usual spring leg 3, the outer end of which is pointed, as designated by 4; and formed in the opposite sides of this spring leg adjacent the pointed end thereof are shallow notches 5.

The shield of my improved pin comprises anelongated plate 6, of suitable sheet metal, which is rigidly clamped in any suitable manner upon the free end of the back 1 of the pin. One end of this plate 6 is widened, as designated by 7, and when the shield is clamped upon the back 1, this-widened portion is bent around beneath that portion of the shieldwhich is clamped on the back 1,. and said widened portion is bent into (I-shape in cross section, with the integral lips, or ears, 8 extending upwardly 'at the forward end of said portion 7. Formed in the center of this widened portion 7 is a notch 9,which, when the shield is bent into proper form, occupies a place at the bottom of the ll-shaped bend, and the edges on each side of this notch are bent inwardly toward one another to form the retaining lips 10.

The width of the notch 9 is slightly greater than is the thickness of the leg 3 of the pin between the notches 5, and the space between the inner edges of the retaining lips 10 is equal to the width of said notch 9.

The pointed leg 8 of my improved safety-pin is located in the shield in the usual manner by pressing the parts of the pin toward one another, and guiding the pointed end of the leg into the U-shaped portion of the shield; and, when the pointed leg is so positioned, the inwardly bent retaining lips'lO engageagainst the shoulders at the ends of the notches 5. When thus positioned, and the parts of the pin are subjected to undue strain, the shoulders at the ends of the notches will engage against the lips 10, and thus very effectually prevent the pin from opening.

i Should the pointed leg 3 of the pin be subjected to undue strain to such a degree as to bend or spring said leg outwardly, as shown by dotted lines A in Fig.

1, the portion of the pin in which the notches 5 are formed will move downwardly into the notch 9, in

which position the shoulders of the notches 5 will be so positioned as to very effectually resist the direct pull upon the leg 3, and retain said leg in a locked position.

The leg 3 of my improved safety pin is readily released from the shield by applying pressure on the underside of said leg and elevating the same until the pointed end thereof passes over the upwardly extending ears, or lips, 8.

A safety pin of my improved construction is simple, inexpensive, can be easily manufactured and when the pointed leg thereof is properly positioned in the I shield, is very securely held against undue strain, even though said pointed leg be bent or sprung into an abnormal position.

I claim:

The herein descrlbed safety pin, constructed with a main leg, a shield fixed on one end of :-u\ld nmlu l g. the

receiving portion of which shield is U-slmpufl ln cross section, the front edges of the lower portion or whieh shield are bent inwardly toward one another t0 torm remining lips, and there being a notch formed in the bottom of the shield at the termination of the retaining lips which notch extends rearwardiy from the trout edge of the lower portion of the shield and from the lower ends 01' the retgining lips when said shield is bent into shape upon the main leg, and a spring' leg integral with the opbosite end'ot the main leg, and there'being notches formed in said spring leg adjacent its polnted end. which notches 10 receive the retaining lips of the shied when the 'pin is closed; substantially as specified.

St. Louis, Mmleh. 5th 1906.

GUSTAV VON HAHN.

Witnesses:

GUsmvn'MnIsnNnAcn, J r., Anansr Bonnm. 

